Error message "Could not establish the connection to the device [...]"

You cannot use the FRITZ!Box USB remote connection software to connect USB devices to a computer, although the software displays the FRITZ!Box and USB devices connected to it. The following error message is displayed:

"Could not establish the connection to the device. If the connection still cannot be established, check the firewall settings to make sure that the FRITZ!Box USB remote connection is registered and enabled as an exception."

Cause

A firewall is blocking communication between the FRITZ!Box USB remote connection and the FRITZ!Box, or the FRITZ!Box USB remote connection is either not correctly configured or not properly installed.

Important:Some of the settings described here are only displayed if the advanced view is enabled in the user interface. The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS.